A nurse stands near the beds of patients suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU) of Municipal Hospital Parelheiros SPDM, in Sao Paulo, Brazil, June 3, 2020. REUTERS/Amanda Perobelli

RTS3AH6R

June 03, 2020

Nurse Luciane de Souza Silva treats a patient suffering from the coronavirus disease (COVID-19) in the...

A doctor puts on a face shield before going to a patient suffering from the coronavirus disease (COVID-19) bed in the Intensive Care Unit (ICU) of Municipal Hospital Parelheiros SPDM in Sao Paulo, Brazil, June 3, 2020. REUTERS/Amanda Perobelli

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June 03, 2020

Nurse Fernanda Macedo treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive...

Medical workers treat patients infected with the coronavirus disease (COVID-19) at a hospital in New...

A medical worker helps a patient suffering from the coronavirus disease (COVID-19) to blow a spirometer for increase lung capacity, at the Intensive Care Unit (ICU) of the Max Smart Super Speciality Hospital in New Delhi, India, May 28, 2020. REUTERS/Danish Siddiqui

Medical workers treat patients infected with the coronavirus disease (COVID-19) at a hospital in New...

A patient suffering from the coronavirus disease (COVID-19), is seen inside the Intensive Care Unit (ICU) of the Max Smart Super Speciality Hospital in New Delhi, India, May 28, 2020. REUTERS/Danish Siddiqui

Medical workers treat patients infected with the coronavirus disease (COVID-19) at a hospital in New...

Medical workers wearing personal protective equipment (PPE) take care of a patient suffering from the coronavirus disease (COVID-19), at the Intensive Care Unit (ICU) of the Max Smart Super Speciality Hospital in New Delhi, India, May 28, 2020. REUTERS/Danish Siddiqui TPX IMAGES OF THE DAY

Medical specialists treat patients infected with the coronavirus disease in a hospital in Moscow

A medical specialist wearing personal protective equipment (PPE) takes care of a patient in the Intensive Care Unit (ICU) of the City Clinical Hospital Number 15 named after O. Filatov, which delivers treatment to people infected with the coronavirus disease (COVID-19), in Moscow, Russia May 25, 2020. Picture taken May 25, 2020. REUTERS/Maxim Shemetov

A medical personnel works in the ICU for the coronavirus disease (COVID-19) patients at St. Marianna...

A medical worker wearing personal protective equipment (PPE) works in the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 22, 2020

Dr. Shigeki Fujitani, the director of the Intensive Care Unit (ICU), talks with his predecessor, Dr....

Dr. Shigeki Fujitani talks with Dr. Yasuhiko Taira at the ICU for the coronavirus disease (COVID-19)...

Dr. Shigeki Fujitani, the director of the Intensive Care Unit (ICU), talks with his predecessor, Dr. Yasuhiko Taira, at the ICU for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 22, 2020

Medical workers prepare to put on personal protective equipment (PPE) as they work in the Intensive Care...

Medical workers prepare to put on PPE as they work in the ICU for the coronavirus disease (COVID-19)...

Medical workers prepare to put on personal protective equipment (PPE) as they work in the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

Medical workers work at the ICU for the coronavirus disease (COVID-19) patients at St. Marianna Medical...

Medical workers work at the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

RTX7K0AZ

May 22, 2020

Medical workers are seen at the doors to the Intensive Care Unit (ICU) for coronavirus disease (COVID-19)...

Medical workers are seen at the doors to the ICU for the coronavirus disease (COVID-19) patients at St....

Medical workers are seen at the doors to the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

Dr. Daiki Morikawa supervises staff members at the ICU for the coronavirus disease (COVID-19) patients...

Dr. Daiki Morikawa supervises staff members at the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 22, 2020

Dr. Yasuhiko Taira, a professor at St. Marianna University School of Medicine, listens to staff members...

Dr. Yasuhiko Taira listens to staff members to get updates on patients at the ICU for the coronavirus...

Dr. Yasuhiko Taira, a professor at St. Marianna University School of Medicine, listens to staff members to get updates on patients at the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 22, 2020

Dr. Shigeki Fujitani, the director of the Intensive Care Unit (ICU), poses for a photograph at the ICU...

Dr. Shigeki Fujitani poses for a photo at the ICU for the coronavirus disease (COVID-19) patients at...

Dr. Shigeki Fujitani, the director of the Intensive Care Unit (ICU), poses for a photograph at the ICU for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

Medical workers wearing personal protective equipment (PPE) are seen inside the ICU for the coronavirus...

Medical workers wearing personal protective equipment (PPE) are seen through a plastic sheet inside the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

Medical workers work at the ICU for the coronavirus disease (COVID-19) patients at St. Marianna Medical...

Medical workers work at the Intensive Care Unit (ICU) for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 14, 2020

A patient recovering from coronavirus disease (COVID-19) waves as he is taken to a regular hospital room...

COVID-19 patient is transferred out of ICU at Infanta Sofia University hospital in Madrid

A patient recovering from coronavirus disease (COVID-19) waves as he is taken to a regular hospital room after spending more than fifty days at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera TPX IMAGES OF THE DAY

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May 14, 2020

Images of Catholic virgins are seen next to safety goggles being decontaminated at the intensive care...

Images of Catholic virgins are seen next to safety goggles at Infanta Sofia University hospital in Madrid...

Images of Catholic virgins are seen next to safety goggles being decontaminated at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

A medical worker treats a patient suffering from coronavirus disease (COVID-19) at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

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May 14, 2020

A patient suffering from coronavirus disease (COVID-19) lies in bed at the intensive care unit (ICU)...

A medical worker treats a patient suffering from coronavirus disease (COVID-19) at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

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May 14, 2020

A patient suffering from coronavirus disease (COVID-19) lies in bed at the intensive care unit (ICU)...

A medical worker cares for a patient suffering from coronavirus disease (COVID-19) at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

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May 14, 2020

A medical worker in full protective gear works on a computer at the intensive care unit (ICU) of the...

Medical workers applaud and high-five a patient suffering from coronavirus disease (COVID-19) as he is taken to a regular hospital room after spending more than fifty days recovering at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

Medical worker cares for a patient suffering from COVID-19 at Infanta Sofia University hospital ICU in...

A medical worker cares for a patient suffering from coronavirus disease (COVID-19) at the intensive care unit (ICU) of the Infanta Sofia University hospital in Madrid, Spain, May 14, 2020. REUTERS/Susana Vera

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May 13, 2020

Health workers wearing protective suits instruct a patient on how to stretch in the Intensive Care Unit...

The words of Avigan, are seen on a board displaying the treatment record ICU ward for coronavirus disease...

The words of Avigan, an anti-flu drug that is being tested as a treatment for COVID-19 patients, are seen on a board displaying the treatment record at the Intensive Care Unit (ICU) ward for coronavirus disease (COVID-19) patients at St. Marianna Medical University Hospital in Kawasaki, south of Tokyo, Japan May 4, 2020. Picture taken May 4, 2020. REUTERS/Issei Kato

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May 13, 2020

Medical staff attend to a patient suffering from the coronavirus disease (COVID-19) in the Intensive...

A medical staff member treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive...

A medical staff member treats a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU), at Scripps Mercy Hospital in Chula Vista, California, U.S., May 12, 2020. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY

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May 13, 2020

Medical staff leave notes on a window about treatment they gave a patient suffering from the coronavirus...

Medical staff leave notes on a window about treatment they gave a patient suffering from the coronavirus...

Medical staff leave notes on a window about treatment they gave a patient suffering from the coronavirus disease (COVID-19) in the Intensive Care Unit (ICU), at Scripps Mercy Hospital in Chula Vista, California, U.S., May 12, 2020. REUTERS/Lucy Nicholson

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May 13, 2020

A patient suffering from the coronavirus disease (COVID-19) is treated in the Intensive Care Unit (ICU),...